"The middle lamella is like an appetizer. It forms as the cell plate splitting an existing cell, one of the first steps in making the new cell wall, but is not yet complete on its own. Similarly, you eat an appetizer before a dinner, and it quenches your hunger a bit, but it's not a real meal."

A really good blog post comparing cell walls to food such as a layer cake and Mexican food.

METAMIA is a free database of analogy
and metaphor. Anyone can contribute or search.
The subject matter can be anything.
Science is popular, but poetry is encouraged.
The goal is to integrate our fluid muses with
the stark literalism of a relational database.
Metamia is like a girdle for your muses,
a cognitive girdle.